diff options
Diffstat (limited to 'include/linux/dcache.h')
| -rw-r--r-- | include/linux/dcache.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/dcache.h b/include/linux/dcache.h index e7041ec48af8..e4221f7c5b53 100644 --- a/include/linux/dcache.h +++ b/include/linux/dcache.h @@ -162,6 +162,7 @@ struct dentry_operations { int (*d_manage)(struct dentry *, bool); struct inode *(*d_select_inode)(struct dentry *, unsigned); void (*d_canonical_path)(const struct dentry *, struct path *); + struct dentry *(*d_real)(struct dentry *, struct inode *); } ____cacheline_aligned; /* @@ -228,6 +229,7 @@ struct dentry_operations { #define DCACHE_MAY_FREE 0x00800000 #define DCACHE_FALLTHRU 0x01000000 /* Fall through to lower layer */ #define DCACHE_OP_SELECT_INODE 0x02000000 /* Unioned entry: dcache op selects inode */ +#define DCACHE_OP_REAL 0x08000000 extern seqlock_t rename_lock; @@ -583,4 +585,12 @@ static inline struct dentry *d_backing_dentry(struct dentry *upper) return upper; } +static inline struct dentry *d_real(struct dentry *dentry) +{ + if (unlikely(dentry->d_flags & DCACHE_OP_REAL)) + return dentry->d_op->d_real(dentry, NULL); + else + return dentry; +} + #endif /* __LINUX_DCACHE_H */ |